Kirk is amazed that Tracey would dare interfere in another culture in this episode. He says that a Starship captain would give his life, sacrifice his ship and its entire crew rather than do such a heinous thing. There follows a list of episodes in which Kirk has interfered with other cultures: "The Apple", "Miri", "The Return of the Archons", "A Taste of Armageddon", "This Side of Paradise", "Errand of Mercy", "Mirror, Mirror" and "Friday's Child". This is not a complete list, but I trust the point has been made.

Great Moment :

The realization that this was another version of Earth when Kirk saw the flag was a nice scene.

Body Count :

Thousands of Khoms killed by Tracey.

Factoid :

This episode was originally written as one of the three possibles for the second pilot.

Plotline

Kirk must deal with a Starship Captain who has taken sides in a war in order to secure the secret of immortality.